The former Celebrity Apprentice host, 69, was photographed snacking on some food from McDonald's aboard what appears to be his private plane. In the pic, he holds a nearly empty container of fries while looking away from the camera and out the window. A burger and a diet coke sit on the table in front of him.

As previously reported, Trump passed the 1,237-delegate mark on Thursday, effectively cementing his status as the Republican nominee. He now has 1,239 delegates, and will likely win more in the June 7 primaries.

His choice of food to celebrate the milestone may be surprising, but it isn't exactly random. Back in 2002, the real estate mogul appeared in a commercial for McDonald's to promote the fast-food chain's now-nonexistent Big N' Tasty.

And earlier this year, he raved to Anderson Cooper about his love of the Golden Arches, calling Big Macs and Quarter Pounders "great stuff."